Script to remove all videos from Youtube Watch Later playlist

Remove videos from Youtube Watch Later playlist.md

UPDATED 22.11.2022

It's been two years since the last update, so here's the updated working script as per the comments below.

Thanks to BryanHaley for this.

setInterval(function () {
    video = document.getElementsByTagName('ytd-playlist-video-renderer')[0];

    video.querySelector('#primary button[aria-label="Action menu"]').click();

    var things = document.evaluate(
        '//span[contains(text(),"Remove from")]',
        document,
        null,
        XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,
        null
    );

    for (var i = 0; i < things.snapshotLength; i++) 
    {
        things.snapshotItem(i).click();
    }
}, 500);

Non-english users will need to change "Action menu" and "Remove from" to what YouTube uses for their localization.

This script moves videos out of Watch later and into another playlist.
Just change the 'newPlaylistName' variable, and you're all set. 👍

// Move YouTube Videos From "Watch Later" Into A New Playlist.
setInterval(function () {

  // define name of playlist to move videos into
  const newPlaylistName = 'old watch later';

  // 1) grab the first video entry
  const video = document.querySelector('ytd-playlist-video-renderer');
  if (!video) return;

  // helper to open that video's action menu
  function openMenu(cb) {
    const btn = video.querySelector('ytd-menu-renderer yt-icon-button');
    if (!btn) return console.warn('No action button');
    btn.click();
    setTimeout(cb, 400);
  }

  // 2) open menu & click “Save to…”
  openMenu(() => {
    const items = Array.from(document.querySelectorAll('ytd-menu-service-item-renderer'));
    const saveItem = items.find(el =>
      el.innerText.trim().toLowerCase().startsWith('save to')
    );
    if (!saveItem) {
      console.warn('“Save to…” not found:', items.map(el => el.innerText));
      return;
    }
    saveItem.click();

    // 3) wait for dialog, click to add to new specified playlist
    setTimeout(() => {
      const option = Array.from(document.querySelectorAll('yt-formatted-string'))
        .find(el => el.innerText.trim().toLowerCase() === newPlaylistName);
      if (!option) {
        console.warn('Playlist “' + newPlaylistName + '” not found');
      } else {
        option.click();
      }

      // 4) close save dialog
      document.dispatchEvent(new KeyboardEvent('keydown', { key: 'Escape' }));

      // 5) after a short pause, re-open menu & click “Remove from Watch later”
      setTimeout(() => {
        openMenu(() => {
          const remItems = Array.from(document.querySelectorAll('ytd-menu-service-item-renderer'));
          const removeItem = remItems.find(el =>
            el.innerText.trim().toLowerCase().includes('remove from watch later')
          );
          if (!removeItem) {
            console.warn('“Remove from Watch later” not found:', remItems.map(el => el.innerText));
          } else {
            removeItem.click();
          }
        });
      }, 500);

    }, 500);
  });

}, 500);